Merge tools/docdump in tools/doc

Reduces clutter in the tools folder.

(cherry picked from commit 6a4ba76836a8a0579a6164351e3fa2d14e29aa79)

tools/SCsub

@@ -115,10 +115,7 @@ if (env["tools"]!="no"):
 	env.Command('#tools/editor/builtin_fonts.h',flist,make_fonts_header)
 
 	SConscript('editor/SCsub');
-	#SConscript('scintilla/SCsub');
 	SConscript('collada/SCsub');
-	SConscript('docdump/SCsub');
-	#SConscript('freetype/SCsub');
 	SConscript('doc/SCsub')
 	SConscript('pck/SCsub')
 

tools/docdump/SCsub

@@ -1,5 +0,0 @@
-Import('env')
-
-env.add_source_files(env.tool_sources,"*.cpp")
-
-Export('env')